I wonder if the Homeworld Gems will change their outfits eventually to better fit in on Earth. The Crystal Gems did wear period clothing at some points in their history (we can see from the old timey photo). Now their outfits seem a bit more outer world and a little less modern. I wonder why they stopped trying to fit in. Maybe it had something to do with Rose leaving, and she was the main advocate for hanging out with humans and being a part of their society.